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authorTom Gundersen <teg@jklm.no>2014-03-20 19:20:55 +0100
committerTom Gundersen <teg@jklm.no>2014-03-20 20:18:15 +0100
commitc49b33aca6fd6a66e2bc43dad4a12701b7df8472 (patch)
tree495e04463c13e05971586302bdedc163a7f4d61c /src/network/networkd-link.c
parent58ec2d3e6e7d2274f5bb5cb64b936f1dbac45168 (diff)
networkd: update mac address in clients when it changes
Pass the mac address on to ipv4ll and dhcp clients so they always have up-to-date information, and may react appropriately to the change. Also drop setting the mac address from uevent, and only log when the address actually changes.
Diffstat (limited to 'src/network/networkd-link.c')
-rw-r--r--src/network/networkd-link.c55
1 files changed, 35 insertions, 20 deletions
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 275ad97a63..e60ba9d61b 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -32,8 +32,6 @@
int link_new(Manager *manager, struct udev_device *device, Link **ret) {
_cleanup_link_free_ Link *link = NULL;
- const char *mac;
- struct ether_addr *mac_addr;
const char *ifname;
int r;
@@ -58,13 +56,6 @@ int link_new(Manager *manager, struct udev_device *device, Link **ret) {
if (r < 0)
return -ENOMEM;
- mac = udev_device_get_sysattr_value(device, "address");
- if (mac) {
- mac_addr = ether_aton(mac);
- if (mac_addr)
- memcpy(&link->mac, mac_addr, sizeof(struct ether_addr));
- }
-
ifname = udev_device_get_sysname(device);
link->ifname = strdup(ifname);
@@ -972,6 +963,9 @@ static int link_update_flags(Link *link, unsigned flags) {
if (link->flags == flags)
return 0;
+ log_debug_link(link, "link status updated: %#.8x -> %#.8x",
+ link->flags, flags);
+
if ((link->flags & IFF_UP) != (flags & IFF_UP))
log_info_link(link,
"link is %s", flags & IFF_UP ? "up": "down");
@@ -1011,9 +1005,6 @@ static int link_update_flags(Link *link, unsigned flags) {
}
}
- log_debug_link(link, "link status updated: %#.8x -> %#.8x",
- link->flags, flags);
-
link->flags = flags;
return 0;
@@ -1321,6 +1312,7 @@ int link_add(Manager *m, struct udev_device *device, Link **ret) {
int link_update(Link *link, sd_rtnl_message *m) {
unsigned flags;
+ struct ether_addr mac;
int r;
assert(link);
@@ -1338,16 +1330,39 @@ int link_update(Link *link, sd_rtnl_message *m) {
PRIu16, link->original_mtu);
}
- r = sd_rtnl_message_read_ether_addr(m, IFLA_ADDRESS, &link->mac);
- if (r >= 0) {
+ r = sd_rtnl_message_read_ether_addr(m, IFLA_ADDRESS, &mac);
+ if (r >= 0 && memcmp(&link->mac.ether_addr_octet, &mac.ether_addr_octet, ETH_ALEN)) {
+
+ memcpy(&link->mac.ether_addr_octet, &mac.ether_addr_octet, ETH_ALEN);
+
log_debug_link(link, "MAC address: "
"%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
- link->mac.ether_addr_octet[0],
- link->mac.ether_addr_octet[1],
- link->mac.ether_addr_octet[2],
- link->mac.ether_addr_octet[3],
- link->mac.ether_addr_octet[4],
- link->mac.ether_addr_octet[5]);
+ mac.ether_addr_octet[0],
+ mac.ether_addr_octet[1],
+ mac.ether_addr_octet[2],
+ mac.ether_addr_octet[3],
+ mac.ether_addr_octet[4],
+ mac.ether_addr_octet[5]);
+
+ if (link->ipv4ll) {
+ r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac);
+ if (r < 0) {
+ log_warning_link(link, "Could not update MAC "
+ "address in IPv4LL client: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
+ if (link->dhcp_client) {
+ r = sd_dhcp_client_set_mac(link->dhcp_client, &link->mac);
+ if (r < 0) {
+ log_warning_link(link, "Could not update MAC "
+ "address in DHCP client: %s",
+ strerror(-r));
+ return r;
+ }
+ }
}
r = sd_rtnl_message_link_get_flags(m, &flags);